Journal of Environmental Sciences
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2026
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IF 6.5
Yuqin Lu,Xueshan Zhang,Jianguo Ding,Sijia Bai,Junxian Gao,Shumei Gao,Jianming Yu
Pt-based catalysts exhibit a strong negative correlation between oxidation efficiency and OVOC carbon chain length. • Mn-based catalysts maintain stable oxidation performance across OVOCs with different functional groups. • The catalytic activity of Mn-based catalysts is governed by manganese oxidation states, while that of Pt-based catalysts relies on metal-support interactions that modulate Pt dispersion and oxidation states. • The reaction pathways for OVOCs oxidation are governed by catalyst type and functional group. The catalytic oxidation of oxygenated volatile organic compounds (OVOCs) is highly governed by both their functional groups and catalyst types. However, systematic investigations into the structure-activity and selectivity relationships across different OVOCs and catalyst systems remain limited. In this work, three Pt-based catalysts (Pt/TiO 2 , Pt/Al 2 O 3 , Pt/SiO 2 ) and three Mn-based oxides (MnO 2 , Mn 2 O 3 , Mn 3 O 4 ) were systematically evaluated for the catalytic elimination of four typical OVOCs, namely ethanol, methyl formate, acetone and ethyl acetate. The performance of Pt-based catalysts showed a strong dependence on OVOCs carbon chain length, whereas Mn-based catalysts exhibited broader applicability for OVOCs degradation. The reaction pathway and energy barrier are dictated jointly by the functional groups of the OVOCs and the surface/redox properties of the catalysts. These findings advance the understanding of structure-activity relationships in OVOCs catalytic oxidation and provide crucial guidance for the rational design of high-performance catalysts for targeted VOCs removal. Download: Download high-res image (191KB) Download: Download full-size image
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Journal of Coatings Technology and Research
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2026
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IF 3.4
Li Huafeng,Lu Qiuying,Song Weiqiang,Zhang Shuai,Li Wenfeng,Li Junzhuang,Zuo Luoru,Feng Lu,Ji Hanyu,Wang Xiaohui,Wu Liang,Ou Yingjun,Huang Weixin
The influence of intercalated zirconium phosphate (IZP), high-entropy oxide (HEO), ultrafine aluminum oxide (FAO), and their binary hybrid systems on epoxy resin coatings was evaluated through electrochemical, thermal, electrical, and dielectric tests. The results delineated distinct functional profiles for each filler. IZP excelled as an active corrosion inhibitor and high-frequency dielectric stabilizer, FAO provided outstanding long-term barrier protection and electrical insulation, and HEO exhibited a complex role, enhancing thermal stability but impairing corrosion resistance due to its inherent semiconducting. Crucially, significant synergistic and antagonistic effects were identified upon hybridization. The IZP/HEO combination demonstrated a remarkable “catalysis-stabilization” synergy, increasing the char yield to over six times that of neat epoxy. The HEO/FAO hybrid achieved an optimal balance of enhanced thermal stability and superior electrical insulation. Conversely, HEO universally degraded anti-corrosion performance, and an antagonistic effect between IZP and FAO led to increased dielectric loss. This work constructs a clear “filler-structure-property” relationship map, providing scientific strategies for the rational design of next-generation epoxy coatings tailored for specific demanding applications such as electronic packaging, long-term corrosion protection, or high-temperature shielding.
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Journal of Materials Research and Technology-JMR&T
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2026
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IF 7.3
Zongqi Xiao,Xingyu Zhou,Yahan Zhang,Haozhou Zeng,Xueliang Jiang,Wensheng Ma,Yan Wang
Phase evolution, microstructure, and properties of mechanically alloyed (CrMnFeCoNi)O (Ni-HEO) and (CrMnFeCoZn)O (Zn-HEO) high-entropy oxide (HEO) powders are systematically investigated. Combined X-ray diffraction, transmission electron microscopy, and Raman spectroscopy demonstrates that both systems form a predominant face-centered cubic (FCC) phase with minor spinel and amorphous phases after 100 h of milling. Nevertheless, their formation mechanisms differ fundamentally. Ni-HEO develops by solid solution into a rocksalt structure based on the NiO matrix. While, Zn-HEO undergoes a complete reconstruction from wurtzite ZnO to a novel rocksalt FCC phase. Zn-HEO exhibits lattice contraction, unlike the lattice expansion in Ni-HEO, reflecting the rocksalt structure's cation accommodation capability. Microstructural characterization confirms that both HEO powders exhibit agglomerated, spherical-like particles with a bimodal size distribution. Chemically, Ni-HEO possesses abundant oxygen vacancies and a pronounced reduction of high-valence metal cations to their +2 oxidation state. In contrast, Zn-HEO displays a nearly defect-free structure, and negative chemical shifts. These distinctions directly govern functional properties. Ni-HEO exhibits higher saturation magnetization (∼6.0 emu/g) and lower coercivity (∼98 Oe), while Zn-HEO shows lower room-temperature resistivity (0.896 MΩ cm). The zero-field-cooled and field-cooled magnetization curves indicate the presence of ferromagnetic interactions in both HEOs, resembling those of spinel-structured rather than rocksalt-structured HEOs. Both HEOs exhibit a typical negative temperature coefficient of resistance with similar activation energies, despite demonstrating distinctly different conduction mechanisms. The successful synthesis of these two distinct HEOs via mechanical alloying underscores the critical role of the principal oxide components in tailoring phase evolution and final material characteristics.
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CERAMICS INTERNATIONAL
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2026
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IF 6
Shucheng Liu,Shangchao Chi,Kui Chen,Chanyin Xiao,Bin Tang
This study demonstrates the effective refinement of the grain size in BaTiO 3 -based samples through a combination of grain size mixing and other methods. The results confirm that blending BaTiO 3 powders with different grain sizes enhances the stability of dielectric properties, while also meeting the requirements of X7R specifications. The ceramics synthesized from the mixed powder system exhibit a more uniform grain size distribution (200-300 nm), enhanced breakdown field strength, long-term reliability, and reduced dielectric loss, resulting in superior overall performance compared to single-grain-size systems, as confirmed by phase field simulations. Additionally, the effects of Zr doping on the core-shell structure thickness and the temperature stability of the hybrid ceramics were systematically investigated. The results demonstrate that excessive Zr doping adversely affects the temperature stability of BaTiO 3 -based ceramics. This material design approach partially mitigates the inherent trade-off between grain refinement and high dielectric constant, providing a cost-effective solution for thin-layer MLCCs with high specific capacitance and reliability. Moreover, the findings provide a material design framework for next-generation BME-MLCC technology.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Shucheng Liu,Shangchao Chi,Kui Chen,Moke Zhou,Bin Tang
This work investigates the microstructure, defect chemistry, internal stress distribution, and reliability of Y–Yb co-doped BaTiO 3 ceramics, in comparison with Y–Er co-doped counterparts. STEM–EDS reveals stronger grain-boundary segregation of Yb-containing species, forming core–shell structures. GPA further shows that lattice distortion is strongly localized within these dopant-rich shells, whereas grain cores remain comparatively relaxed. In contrast to the weakly bound A-site defect chemistry of Er, Y–Yb co-doping is associated with the formation of rare-earth (RE)–oxygen-vacancy-related defect centers likely involving both Ba and Ti sites, inducing a strongly distorted dopant-rich shell that effectively suppresses oxygen-vacancy migration and significantly enhances grain-boundary insulating behavior. Accordingly, Y–Yb co-doped compositions exhibit longer lifetime and improved reliability, with the optimized Yb2 sample showing an approximately 2.2-fold increase in mean time to failure (MTTF) compared to the baseline sample (Yb0), while compositions with moderate Yb content achieve the best combination of high breakdown strength (12.78 kV·mm⁻¹) and superior DC-bias stability. Overall, these findings identify moderate Y–Yb co-doping as an effective route to achieving a balanced improvement in permittivity, reliability, and miniaturization capability in next-generation high-reliability BME-MLCC materials.
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Scientific Reports
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2026
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IF 4.9
Li Wentao,Zhang Qian,Liu Zuohua,Tao Changyuan,Zheng Guocan,Chen Nanxiong,Wang Dong,Chen Hufei
Manganese residue is a dangerous industrial by-product and has traditionally been stored. Conventional harmless treatment can stabilize Mn2+, but its resource utilization is relatively difficult due to the complex composition of manganese residue. This study proposes a sustainable development approach for synthesizing high-performance M-type ferrite BaFe11.6Mn0.4O19 from manganese residue rich in Fe and Mn for microwave absorption. By optimizing roasting conditions, we controlled oxygen vacancy concentration, enhancing the ferrite’s dielectric and magnetic properties for superior microwave absorption. By simulating the composition of rare earth solid waste, rare earth elements La2O3 and CeO2 were incorporated into ferrite. Further optimize the loss matching mechanism and shielding effect. Characterization techniques confirmed a multiphase-phase M-type ferrite structure with a minimum reflection loss of -33.42 dB. It is clarified that the main reason for the performance improvement mechanism after the incorporation of rare earths is that the formation of new phases and the appearance of solid solutions promote the synergistic effect in polarization and electromagnetic energy dissipation. This method provides a scalable model for industrial waste recycling. This method provides a scalable model for industrial waste recycling.
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Materials Today Communications
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2026
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IF 4.9
Yutong Hong,Shouxiang Gao,Yingke Zhu,Miaojun Xu,Yan Xia,Juan Li
Overcoming the inherent flammability of epoxy resins while achieving a well-balanced combination of properties is an urgent requirement for the development of multifunctional epoxy materials. In this study, metal oxide nanoparticles (M x O y ), including Fe 3 O 4 , CoO, and MnO, were assembled onto piperazine pyrophosphate (PAPP) via ultrasound-assisted interfacial self-assembly to construct core-satellite-structured hybrid fillers, denoted as PAPP@M x O y . The integrated suprastructure and nanoparticle-decorated surface improved the dispersion of PAPP in the EP matrix while promoting catalytic char formation, thereby endowing the resulting EP composites with enhanced comprehensive performance. With only 9 wt% PAPP@M x O y , the EP composites achieved a UL-94 V-0 rating and a limiting oxygen index (LOI) of up to 35.8 vol%. Compared with neat EP, the peak heat release rate (pHRR), total heat release (THR), and total smoke release (TSR) were reduced by 61.5%, 29.7%, and 49.6%, respectively. A systematic comparison further revealed that Fe 3 O 4 -decorated PAPP exhibited a relatively balanced overall fire-safety performance among the single- and dual-metal-oxide-decorated counterparts, with simultaneous improvements in heat-release suppression and smoke reduction. In addition, compared with EP composites containing pristine PAPP, the PAPP@M x O y -filled systems exhibited improved tensile, flexural, and impact strengths, indicating that surface-assembly modification effectively mitigated the mechanical deterioration commonly caused by flame-retardant fillers. This work presents an efficient and versatile surface-assembly strategy for constructing high-performance flame-retardant fillers and offers a practical route toward simultaneously improving the fire safety and mechanical properties of EP composites.
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METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
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2026
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IF 3.1
Luo Shuxuan,Cao Jianqi,Wang Wanlin,Sun Yongqi
This study systematically explored the role of coordination cations in both tetrahedral and octahedral sites, in the formation of chromium-bearing spinel for the detoxification of CaO–SiO 2 –MgO–MnO–Al 2 O 3 –Cr 2 O 3 stainless steel slags. A comprehensive characterization was adopted, combining FTIR, Raman, XRD, and EPMA analyses. The structural and compositional evolution of spinel and coexisting liquid phases was elucidated, quantifying the degree of polymerization (DOP) and clarifying the influence of MnO/MgO and Cr 2 O 3 /Al 2 O 3 mass ratios on the silicate network. Experimental and thermodynamic results consistently revealed that increasing MnO/MgO and Cr 2 O 3 /Al 2 O 3 mass ratios had a synergistic effect, promoting the formation of (Mg,Mn)(Al,Cr) 2 O 4 spinel and the incorporation of Cr elements. The partitioning behavior of cations between spinel and liquid phases was systematically analyzed across compositionally varied slags during detoxification, with particular focus on their coordination on the formation of spinel. Moreover, the interfacial behavior between the spinel precipitated from hot stainless steel slags and the liquid phases was also explored. Those indicated the potential of spinel phase formation could be enhanced by adjusting the types and concentrations of coordination cations. This study thus provides novel fundamental insights for hot industrial slags detoxification and the further resource recovery process.
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Journal of Energy Chemistry
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2026
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IF 14.9
Guohu Chen,Yundian Ya,Yan Li,Guangpeng He,Yuyu Chen,Wenwei Wu,Xuehang Wu
O3-type Ni/Mn-based layered oxides have shown promise for application in sodium ion batteries (SIBs), due to their ability to achieve high energy density at increased upper cut-off voltages through the synergistic cationic/anionic redox reactions. However, a series of interfacial side reactions usually leads to rapid capacity/voltage decay. Herein, we propose a surface reinforcement approach to enable stable 4.5 V high-voltage cycling of O3-type layered oxides. Through thermally induced ionic interdiffusion, Zn(H 2 PO 4 ) 2 acts as a surface reinforcement initiator, enabling the simultaneous achievement of triple effects: elimination of residual alkali, construction of surface coating, and implementation of surface doping. Zn 2+ doping constructs a special Zn–O–Na/vacancy configuration, enhancing oxygen redox reaction reversibility by increasing non-bonding O 2 p states and improving ionic/electronic transport. Additionally, the cubic-structured Na 3−2 x Zn x PO 4 (NZP) nanolayer facilitates rapid Na + transfer, restrains lattice oxygen release, and alleviates electrolyte decomposition during cycling. This surface reinforcement treatment diminishes localized asynchronous structural evolution and simplifies the phase transition process during cycling. The surface-reinforced O3-type Na 0.9 Cu 0.12 Ni 0.33 Mn 0.4 Ti 0.15 O 2 exhibits superior cycling stability (76.8% vs. 48.4% capacity retention over 200 cycles at 100 mA g −1 ) and rate capability (88.2 vs. 43.1 mAh g −1 at 2000 mA g −1 ) compared to the pristine counterpart at 4.5 V. This work presents a new approach to fortify the surface structure for developing high-voltage stable layered oxide cathode materials for SIBs.
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Xiaoyang Li,Jiahang Liu,Ruolin Lv,Yingying Chu,Lu Lv,Junhe Lu,Weiming Zhang
Self-quenching of radicals and their non-selective attack on co-existing substrates result in the low oxidant utilization efficiency in Fenton and Fenton-like systems. Herein, we developed a novel octahedral carbon-encapsulated zirconium oxide catalyst (ZrO 2 -C) featured by large specific surface area (219.5 m 2 /g), highly-dispersed sub-5 nm active sites, and strong metal-support interactions. The catalyst shows outstanding performance for peroxymonosulfate (PMS) activation, and a two-step catalytic mechanism is proposed. First, it interacts with PMS via inner-sphere coordination to form a metastable surface complex (Stage I); then, the reactive complex reacts with selected molecules via oxygen-atom-transfer route (Stage II). Surprisingly, only 1.21 PMS molecules was consumed for each molecule of carbamazepine (CBZ), almost close to the stoichiometric ratio. Based on a quantitative structure–activity relationship between the reaction rates and the molecular structures of fourteen substituted phenols, we demonstrated that this catalytic process was highly selective towards electron-rich compounds, that is, only those organics with E HOMO values higher than ca. −6.52 eV could be oxidized. Overall, this study provides mechanistic insights into the catalytic selectivity of Zr-based catalysts and advances their further application in Fenton-like systems.
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APPLIED SURFACE SCIENCE
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2023
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IF 6.7
Wangqiong Xu,Qiling Li,Fengrui Sui,Shimei Guo,Ruijuan Qi,Cuiqiong Yan,Lijuan Chen,Shubiao Xia,Junming Guo,Zhe Li,Rong Huang,Feixiang Cheng
Ni doping is a commonly used strategy to improve the electrochemical performance of LiMn 2 O 4 . Uncovering the structural changes of Ni-doped LiMn 2 O 4 during electrochemical cycling, particularly at the atomic level, is important to understand the mechanism of the relationship between Ni doping and performance improvement. Herein, we investigate the chemical and structural evolutions of the Ni-doped LiMn 2 O 4 electrodes before and after 1000 cycles at 10 C with atomic resolution and correlate them with changes in the electrochemical properties . We found that Ni 2+ ions doped into the Mn 16d sites to form a more steady LiNi x Mn 2-x O 4 phase construction, which can effectively stabilize the spinel structure by hindering Jahn − Teller distortion. Comprehensive atomic imaging demonstrated that Ni doping can suppress the formation of the unexpected Mn 3 O 4 , and rock-salt MnO phases on the surface and subsurface of LiMn 2 O 4 during cycling, which is conducive to stabilizing the MnO 6 octahedron and inhibiting the migration of Mn. Resultantly, splendid long cycling stability of 88.92 % after 1000 cycles at 10 C (1 C = 148 mAh g −1 ) for the optimized LiNi 0.05 Mn 1.95 O 4 sample is presented. Our study provides an ingenious avenue for regulating the surface optimization and reconstruction of electrode materials .
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2022
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IF 11.357
Tingting Pan,Hua Deng,Yuqin Lu,Jinzhu Ma,Lian Wang,Changbin Zhang,Hong He
The miscellaneous volatile organic compounds (VOCs) in industrial flue gas streams usually demonstrate significant mutual inhibition effects, and the behavior of a particular VOC in mixtures is not clear, which hinders the application of catalytic technology. This study examines the catalytic oxidation and mixing effects of representative VOCs in industrial exhausts, consisting of acetone (AC), ethyl acetate (EA), and toluene (Tol), on common Mn-based catalysts (e.g., MnO2, Mn2O3, LaMnO3, and Mn3O4) by means of intrinsic activity evaluation, coadsorption, VOC temperature-programmed oxidation, in situ diffuse reflectance infrared Fourier transform spectroscopy, and gas chromatography–mass spectrometry. The results showed no inhibiting effect on the conversion of these VOCs when combusted together; instead, a significant mutual promotion effect was found, especially on Tol destruction, with a sharp decrease in the Tol T50 from 214 to 158 °C on MnO2. It is proposed for the first time that the addition of AC/EA in Tol combustion leads to the generation of o/m-methyl phenol, which changes the rate-determining step of the ring-opening process, thus elevating the conversion of Tol together with AC and EA in the mixture at low temperatures.
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